tests: use Git's test framework

This allows tests to run in parallel as well as letting us use "prove"
or another TAP harness to run the tests.

Git's test framework requires Git to be fully built before letting any
tests run, so add a new target to the top-level Makefile which builds
all of Git instead of just libgit.a and make the "test" target depend on
that.

Signed-off-by: John Keeping <john@keeping.me.uk>

tests/setup.sh

@@ -15,46 +15,48 @@
 # run_test 'repo index' 'cgit_url "/" | tidy -e'
 # run_test 'repo summary' 'cgit_url "/foo" | tidy -e'
 
-unset CDPATH
+: ${TEST_DIRECTORY=$(pwd)/../git/t}
+TEST_NO_CREATE_REPO=YesPlease
+. "$TEST_DIRECTORY"/test-lib.sh
+
+# Prepend the directory containing cgit to PATH.
+PATH="$(pwd)/../..:$PATH"
 
 mkrepo() {
 	name=$1
 	count=$2
-	dir=$PWD
-	test -d "$name" && return
-	printf "Creating testrepo %s\n" "$name"
-	mkdir -p "$name"
-	cd "$name"
-	git init
-	n=1
-	while test $n -le $count
-	do
-		echo $n >file-$n
-		git add file-$n
-		git commit -m "commit $n"
-		n=$(expr $n + 1)
-	done
-	if test "$3" = "testplus"
-	then
-		echo "hello" >a+b
-		git add a+b
-		git commit -m "add a+b"
-		git branch "1+2"
-	fi
-	cd "$dir"
+	test_create_repo "$name"
+	(
+		cd "$name"
+		n=1
+		while test $n -le $count
+		do
+			echo $n >file-$n
+			git add file-$n
+			git commit -m "commit $n"
+			n=$(expr $n + 1)
+		done
+		if test "$3" = "testplus"
+		then
+			echo "hello" >a+b
+			git add a+b
+			git commit -m "add a+b"
+			git branch "1+2"
+		fi
+	)
 }
 
 setup_repos()
 {
-	rm -rf trash/cache
-	mkdir -p trash/cache
-	mkrepo trash/repos/foo 5 >/dev/null
-	mkrepo trash/repos/bar 50 >/dev/null
-	mkrepo trash/repos/foo+bar 10 testplus >/dev/null
-	mkrepo "trash/repos/with space" 2 >/dev/null
-	cat >trash/cgitrc <<EOF
+	rm -rf cache
+	mkdir -p cache
+	mkrepo repos/foo 5 >/dev/null
+	mkrepo repos/bar 50 >/dev/null
+	mkrepo repos/foo+bar 10 testplus >/dev/null
+	mkrepo "repos/with space" 2 >/dev/null
+	cat >cgitrc <<EOF
 virtual-root=/
-cache-root=$PWD/trash/cache
+cache-root=$PWD/cache
 
 cache-size=1021
 snapshots=tar.gz tar.bz zip
@@ -66,83 +68,33 @@ summary-tags=5
 clone-url=git://example.org/\$CGIT_REPO_URL.git
 
 repo.url=foo
-repo.path=$PWD/trash/repos/foo/.git
+repo.path=$PWD/repos/foo/.git
 # Do not specify a description for this repo, as it then will be assigned
 # the constant value "[no description]" (which actually used to cause a
 # segfault).
 
 repo.url=bar
-repo.path=$PWD/trash/repos/bar/.git
+repo.path=$PWD/repos/bar/.git
 repo.desc=the bar repo
 
 repo.url=foo+bar
-repo.path=$PWD/trash/repos/foo+bar/.git
+repo.path=$PWD/repos/foo+bar/.git
 repo.desc=the foo+bar repo
 
 repo.url=with space
-repo.path=$PWD/trash/repos/with space/.git
+repo.path=$PWD/repos/with space/.git
 repo.desc=spaced repo
 EOF
 }
 
-prepare_tests()
-{
-	setup_repos
-	rm -f test-output.log 2>/dev/null
-	test_count=0
-	test_failed=0
-	echo "[$0]" "$@" >test-output.log
-	echo "$@" "($0)"
-}
-
-tests_done()
-{
-	printf "\n"
-	if test $test_failed -gt 0
-	then
-		printf "test: *** %s failure(s), logfile=%s\n" \
-			$test_failed "$(pwd)/test-output.log"
-		false
-	fi
-}
-
-run_test()
-{
-	bug=0
-	if test "$1" = "BUG"
-	then
-		bug=1
-		shift
-	fi
-	desc=$1
-	script=$2
-	test_count=$(expr $test_count + 1)
-	printf "\ntest %d: name='%s'\n" $test_count "$desc" >>test-output.log
-	printf "test %d: eval='%s'\n" $test_count "$2" >>test-output.log
-	eval "$2" >>test-output.log 2>>test-output.log
-	res=$?
-	printf "test %d: exitcode=%d\n" $test_count $res >>test-output.log
-	if test $res = 0 -a $bug = 0
-	then
-		printf " %2d) %-60s [ok]\n" $test_count "$desc"
-	elif test $res = 0 -a $bug = 1
-	then
-		printf " %2d) %-60s [BUG FIXED]\n" $test_count "$desc"
-	elif test $bug = 1
-	then
-		printf " %2d) %-60s [KNOWN BUG]\n" $test_count "$desc"
-	else
-		test_failed=$(expr $test_failed + 1)
-		printf " %2d) %-60s [failed]\n" $test_count "$desc"
-	fi
-}
-
 cgit_query()
 {
-	CGIT_CONFIG="$PWD/trash/cgitrc" QUERY_STRING="$1" "$PWD/../cgit"
+	CGIT_CONFIG="$PWD/cgitrc" QUERY_STRING="$1" cgit
 }
 
 cgit_url()
 {
-	CGIT_CONFIG="$PWD/trash/cgitrc" QUERY_STRING="url=$1" "$PWD/../cgit"
+	CGIT_CONFIG="$PWD/cgitrc" QUERY_STRING="url=$1" cgit
 }
+
+test -z "$CGIT_TEST_NO_CREATE_REPOS" && setup_repos